Name _______________________________ Period ______ Date: ___________
**Check which column best describes the substances or descriptions listed below.
Descriptions:
1. Pure Substances
2.
Something that cannot be chemically separated
3.
Something that can be chemically separated
4.
Something found on the periodic table
5.
Something composed of 2 or more elements bonded
chemically
Element Compound
Substances:
6.
Water (H2O)
7.
Carbon Dioxide (CO2)
8.
Carbon (C)
9.
Hydrogen (H)
10. Oxygen gas (O2)
11. Salt (NaCl)
12. Iron (Fe)
13. Sodium Bicarbonate (NaHCO3)
14. Calcium (Ca)
15. Hydrogen Peroxide (H2O2)
Choose any one of the substances (number 6 through 15), and give 2 reasons why that
substance is either an element or a compound. **Always write in complete sentences.**